"The scheme is formed from underused open-space ..."

I thought that the purpose of open space was to provide open space.

It is a pity that Lewisham doesn't have the honesty to say something like:

"The scheme is formed from open space that has considerable amenity value for the local residents but we have housing targets to meet and there isn't any other land we can take for building without spending a lot of money we don't have..."